F07QNF Example Program Results

 Solution
    (-4.0000, 3.0000) ( 3.0000,-2.0000) (-2.0000, 5.0000) ( 1.0000,-1.0000)

 Details of factorization
                    1                 2                 3                 4
 1  (-2.0954,-2.2011) (-0.1071,-0.3157) (-0.4823, 0.0150) ( 0.4426, 0.1936)
 2                    ( 4.4079, 5.3991) (-0.6078, 0.2811) ( 0.5279,-0.3715)
 3                                      (-2.8300,-0.0300) (-7.8600,-2.9600)
 4                                                        (-0.3900,-0.7100)

 Pivot indices
           1          2         -2         -2